PT - JOURNAL ARTICLE AU - Patrick S Phelan TI - Synthesis of case reports for meta-assessment of causality AID - 10.1136/bmjebm-2018-110969 DP - 2018 May 30 TA - BMJ Evidence-Based Medicine PG - bmjebm-2018-110969 4099 - http://ebm.bmj.com/content/early/2018/05/30/bmjebm-2018-110969.short 4100 - http://ebm.bmj.com/content/early/2018/05/30/bmjebm-2018-110969.full